What is the value of x + |y| when x = –11 and y = –4?

A.–15 B.–7 C.7 D.15

Mathematics

1 answer:

NeX [460]2 years ago

7 0

$x=-11\\y=-4\\\\x+|y|=\\\\-11+|-4|=\\\\-11+4=-7\\\\Answer\ B.$

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PLEASE ANSWER + BRAINLIEST!! Factor completely. 4k - 20k^9 = 3b^2 - 108 =

Neporo4naja [7]

$4k-20k^9=4k(1-5k^8)=4k\left[1^2-(k^4\sqrt5)^2\right]\\\\=4k(1-k^4\sqrt5)(1+k^4\sqrt5)=4k\left[1^2-(k^2\sqrt[4]5)^2\right](1+k^4\sqrt5)\\\\=4k(1-k^2\sqrt[4]5)(1+k^2\sqrt[4]5)(1+k^4\sqrt5)\\\\=4k\left[1^2-(k\sqrt[8]5)^2\right](1+k^2\sqrt[4]5)(1+k^4\sqrt5)\\\\=4k(1-k\sqrt[8]5)(1+k\sqrt[8]5)(1+k^2\sqrt[4]5)(1+k^4\sqrt5)$

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$Used:\ (a-b)(a+b)=a^2-b^2$

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